64
Description of the Menu
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70
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6
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(1
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6.4.6
Audio alarm type
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The trigger of the audio alarm can be switched on or off.
6.4.6.1
Pinpoint
The tone of the acustical signal changes its frequency only in a LR-window
which ranges from one decade below the Trigger level 1 up to one decade above the
Trigger level 1. Below the window the tone is constantly
low
, above the window it is
constantly high.
Example: The Trigger level 1 is 4×10
-7
mbar l/s. So the window where the tone
changes reaches from 4×10
-8
mbar l/s up to 4×10
-6
mbar l/s.
6.4.6.2
Leak rate prop.
The frequency of the accoustic output is proportional to the reading on the bargraph
display. The frequency ranges from 300 Hz to 330 Hz. Please
refer to Chapter
for the definition of the number of decades.
Softkey 2:
Use this function to localize a leak with a well-known size. Please refer to Chapter
Softkey 3:
The sound will be proportional to the leak rate signal.
Please refer to Chapter
Softkey 5:
?
Help
Softkey 6:
Please refer to Chapter
Softkey 7:
An alarm sounds when the trigger 1 is exceeded.
Please refer to Chapter
Fig. 6-10: Pinpoint
f
LR
Tr. 1
0.1 • Tr. 1
10 • TR. 1
2570 Hz -
491 Hz -